Cell Membrane and Transport

Front

The movement of materials that requires energy is called...

Back

active transport

Front

Which describes an isotonic environment?

Back

Concentrations of water are equal inside and outside the cell

Front

What does 'bilayer' mean?

Back

two layers

Front

Something is ___________ ____________ when some molecules can cross the membrane while others cannot.

Back

Selectively (or Semi) Permeable

Front

A phospholipid has 2 parts. What are they called?

Back

Hydrophilic Head, Hydrophobic Tail

Front

What is the primary function of the cell membrane?

Back

To protect the cell and regulate what enters and leaves.

Front

What does 'hydrophilic' mean?

Back

Attracted to water.

Front

What does 'hydrophobic' mean?

Back

Repelled by water.

Front

What is diffusion?

Back

The movement of molecules from an area of higher concentration to an area of lower concentration.

Front

What is osmosis?

Back

The diffusion of water across a selectively permeable membrane.